22RE Fuel / injector problem - Major Leak

[Hilux_matt]

Howdy

So after having to get my car towed back from Orange last weekend due to a leaking injector, I pulled it apart this morning and think I have found the cause...






Would this cause the injector to leak severely ? ?

All the injectors were ultra sonically cleaned and new o-rings etc put on them less then 3 months ago, so i am assuming that faulty installation is the cause of this as the other 3 are fine ??

Now that I have taken them all out for inspection, do I need to fit new o-rings prior to installing them again or will they be OK ?

Also, can the injector leak internally and find its way out of the section between the actual injector and the electrical connection ? or is that all molded together and no possible to leak ?

Secondly..

On the fuel rail, there are two items, one is the fuel pressure regulator, and the other I don't know what it is ?

Regulator : ? (on the return end)



and this I don't know ? (on the incoming end)



For this other one, there is a small Phillips screw in the center of that top hat looking thing that can be screwed in to open the valve and allow less restriction, or screwed out to add restriction. I am guessing this is the regulator ? But everywhere I read seems to indicate that the regulator has a vacuum line attached to it, like the first pic does.

My screw is fully wound in which is allowing NO restriction, so does this mean my fuel pressure will be incorrect , and is this how I adjust it but screwing that screw until I get the correct reading of a fuel pressure gauge ?

Lastly, what are the affects of running fuel pressure too high or too low ?
I am running a microtech ecu which has been tuned according to the way the fuel pressure was (incorrectly) set ...

Thanks a lot for your help guys

Matt

[Gavatron]

The one with the vacuum line is the regulator. The one on the inlet end is a pulsation dampner.

I'd be buying new o-rings for all the injectors. Cheap insurance.

[Draven]

Yep, that o-ring looks to be the cause. Replace it. Assuming all the other o-rings are fine, no need to replace them.

I've never messed with the 22R, but that unknown could be a pulse dampener, which are typically before the rail. FPRs are always on the return line. Re: fuel pressure, put simply f you decrease fuel pressure, you'll end up running lean, if you increase it, you'll run rich

edit: argh, beaten

[wilbo666]

1) Replace that O-ring, make sure to lube them all with fuel before install.

2) The item with the vac line is the fuel regulator. It isn't adjustable.

3) The other item has been correctly identified as a pulsation dampener

Page 8:
http://www.autoshop101.com/forms/h22.pdf

Cheers
Wilbo

[Kedderz]

Wilbo, what should you use to lube them? Im about to install some 440s into my 1ggte rail and havent lubed them

[Draven]

Wilbo, what should you use to lube them? Im about to install some 440s into my 1ggte rail and havent lubed them

1) Replace that O-ring, make sure to lube them all with fuel before install.

clearer?

[Kedderz]

awwwwww, shut!

thanks

[Hilux_matt]

I used vasoline.... is that ok??

[Draven]

it's a petroleum-based product... why not?